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The microstructure of the cast steel, i.e. tempered martensite lath microstructure with high density of dislocations and fine precipitates (carbides and carbonitrides), provides excellent mechanical properties up to the temperature of 600 oC [1, 2].
Influence of heat treatment on the microstructure and mechanical properties and low cycle fatigue of the cast steel has been shown e.g. in [9, 10] and [11], respectively.
For the applied parameters of fatigue process (strain and temperature) the values of shape factor for subgrains are similar and range between 0.683 ÷ 0.701.
The MX particles, however, affect the recovery delay of the dislocation substructure.
Golański, Effect of the heat treatment on the structure and mechanical properties of GX12CrMoVNbN9 -1 cast steel Archives of Mater.

Moreover, the fatigue factors are discussed so that researcher can get little idea about failure point of the nickel-titanium rotary files.
The nickel-titanium alloys are used as bio-compatible material in Endodontics over the stainless steel because of its mechanical properties and geometry viz. shape memory property, higher super elasticity, flexibility, lower elasticity modulus than steel, taper and narrowness in curved canal proved to be efficient for canal preparation [5].
There are three important factor related to fatigue life viz. fatigue damage, fatigue safety factor, fatigue sensitivity factor etc.
Fatigue safety factor represents factor of safety value related to design life.
Yared G, In vitro study of the torsional properties of new and used Pro File nickel titanium rotary files, J Endod. 30 (2004 ) 410–12

Unidirectional reinforces carbon fiber materials are more effective if refer to specific properties per unit volume compared to conventional isotropic materials.
So it is more important to understand short fiber reinforced composites mechanical properties, which depend strongly on the interfacial bonding between fiber and matrix.
Variables such as the volume fraction, aspect ratio, tensile strength, orientation of the short carbon fiber as well as the interfacial strength are of primary importance to determine the mechanical properties and tribological behaviour of these composites [3,4,5,6,7].
A point of interest in composites is their ability to transfer stresses across the interface, properties that is related to a complex combination of factors such as surface energy of the reinforcing phase, adhesion strength, number of stratified layers, fiber orientation with respect to the external action.
Influence of fiber volume fraction on the mechanical and thermal properties of unidirectionally aligned short-fiber -reinforced SiC composites.

Some factors such as conversion, particle number (Np), fraction of coverage, polydispersion index (PDI) and particle size distribution (PSD) of the reactions were investigated.
According to the different features of different nucleation methods, the nucleation mode of polymer particles can be deduced by comparing some factors such as conversion, Np, coverage fraction (θ), PDI and PSD, etc.
Results and discussion Reaction compositions and latex properties.
The compositions and product properties are listed in Table 1.
Synthetic properties and applications of polymer emulsions.

Such changes in the properties indicate the change of the electronic structure of the atoms of the alloy composition elements.
Most investigations of the processes of the hydrogen interaction with amorphous alloys are focused on alloy bulk properties.
At the ion bombardment of the multicomponent alloy, the phases with stronger interatomic bonds and smaller etch factors form protruding irregularities.
Skryabina, Effect of hydrogen on the properties of amorphous alloys “finemet” type: PEN-X effect.
Pavlova, Interaction of the surface of ribbons of amorphous soft-magnetic iron-based alloys with water and their magnetic properties, Phys.

Due to the elongated shape of the wood cells and the oriented structure of the cell walls, its properties differ greatly in individual directions.
In addition to the natural structure of wood, there are other factors that affect its properties.
In addition, another property of wood is its ability to change its moisture content depending on the environment in which it is located, and thus its properties also change.
All these factors need to be evaluated when evaluating the quality of wood.
Schmid, .Zkoušení cihelného zdiva v konstrukci, Diagnostika stavebních konstrukcí– přednášky (In Czech), 2005 [10] EN 408:2010+A1:2012, Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties, CEN, 2012

But in field application, due to many factors affect which include nonlinear and time varying, the dynamic parametric model only obtained by test and identification.
For this purpose, the following steps will be considered: First, building mathematical model of the single linear electromechanical actuator by generalized forces method, consider the situation of engineering practice, ignore some factors which can't reflects main dynamic properties.
As shown later by the results, these factors have only a minor impact on the quality of model.
With respect to small time constants, the remaining dynamic properties of the servo drive can be left out of consideration, playing only a negligible role in the overall behavior of the system and being irrelevant for the control model.
Fig.4 Comparison the output of real system and identified model Conclusions Because too many nonlinear factors exist, building exactly model of linear electromechanical actuator is almost impossible.

There are many factors causing the failure of the engine.
Different microstructures correspond to different high cycle fatigue properties [2,3].
At such a high temperature, the microstructure of single crystal superalloy will change slowly, which will affect the fatigue property of the alloy.
The coherency between the matrix and the precipitates has a significant influence on the properties.
Tang et al, Effects of low angle boundaries on the mechanical properties of single crystal superalloy DD6, in: R.C.

Microstructure and crystallographic texture play an important role in the sputtering target properties.
The high shear strain introduced by the asymmetric rolling and the strain path change in every pass during cross rolling are probably the main factors affecting the texture evolution of the ACR sample.
Michaluk, Correlating discrete orientation and grain size to the sputter deposition properties of tantalum, J.
Barlat, Asymmetric rolling of interstitial free steel sheets: Microstructural evolution and mechanical properties, J.
Hamad, Structural features and mechanical properties of AZ31 Mg alloy warm-deformed by differential speed rolling, J.

These theories in different periods and different extent play a positive role in controlling the water inrush from coal floor for control, but these methods consider not comprehensive enough, failed to reveal the relationship among factors and water inrush.
Thus the floor failure and the development of confined water flowing and roof first weighting and periodic weighting step distance are closely related, mine pressure and water pressure is maximum influence of confined water rising height of the main factors, especially the pressure of the water.
Aggregate accounted for a larger proportion of the material, is the object of cementing material cementation, its physical and mechanical properties have an important effect on the properties of similar materials.
Cement is the dominant nature of similar material, the mechanical properties of the material mechanical properties similar to a great extent, cementing materials commonly used in the main gypsum, cement, lime, calcium carbonate, kaolin, paraffin, sawdust, etc..
Table.3 Physical and mechanical properties of rock 2.2 Similar results analysis 1) along with the working face advancing, roof and floor is gradually destroyed.